using System;
using System.Collections.Generic;
using System.Text;
 
class RandomGenerator
{
    private Random gen;
    private int num = 0;
    private int[] cache;
 
    public RandomGenerator(int Num)
    {
        this.gen = new Random(unchecked((int)DateTime.Now.Ticks));
        this.num = Num;
        this.cache = new int[Num];
    }
 
    public int[] Get(int left, int right)
    {
        for (int i = 0; i < this.num; i++)
        {
            this.cache[i] = this.gen.Next(left, right);
        }
        return this.cache;
    }
}